SIN WAVE PLOT NOT WORKING

>

> f= input('enter the frequency in hertz of the sine wave'); 
a=input('enter amplitute');
phi=input('enter phase shift');
n=input('enter n')
fs=44000;
t=0:.0001:5;
y= a*sin(2*pi*f*n+ phi);
plot(t,y);
ylabel ('Amplitude');
xlabel ('Time Index');
title ('Sine wave');
end

I have to generate several sinusoid with a given magnitude A, frequency f0 [Hz], and phase shift φ [rad]. x(n) = A sin(2πf0n + φ). what is wrong with above code as it shows the same graph for all the values. also can you tell me how to specify start and stop moment for signal sampling.(forgive my ignorance i am a beginner)

Answer 1

[Jan]

Your y is a scalar, because it does not depend on the time vector t. Try this:

y = a*sin((2*pi*f*n) * t + phi);